Presence and IntComm WG

[Candace Holman <>]

Hi all,

In testing with David from UPenn, we discovered a problem on the client 
that will have a BIG impact on your testing.  Do not set the EyeBeam 
Presence Agent Refresh Interval to 10 seconds, set it to something much 
larger like 86400 seconds.  My apologies.  I will update the web site.  
If you were having problems with presence only working for a little 
while (10 seconds?), try this change and you should see continuous 
presence updates every 30 seconds or so!

I wrote that you should set the Presence Agent Refresh Interval to 10 
seconds.  I assumed that this was the same as the refresh rate for 
presence updates, but it is not.  This is actually the maximum time that 
you will remain subscribed to do presence updates with your server.  If 
you try to send presence updates after the refresh interval terminates, 
in the Diagnostic Log you will see a header like: *Subscription-State: 
terminated;reason=timeout* and then the reply from the server will say: 
*SIP/2.0 481 Call/Transaction Does Not Exist*   The only thing that will 
cause your client to SUBSCRIBE again is to disable and re-enable the 
account registration.  But setting the refresh interval to 86400 will 
make the subscription last for 24 hours.

Candace